vmware1 QEMU 1.0 testing on CentOS 6.3 via the Phoronix Test Suite. centos6x64: Processor: QEMU Virtual 1.0 @ 3.30GHz (1 Core), Motherboard: Bochs, Chipset: Red Hat Virtio, Memory: 1 x 1024 MB RAM, Disk: 45GB, Graphics: Cirrus Logic GD 5446, Network: Red Hat Virtio device OS: CentOS 6.3, Kernel: 2.6.32-279.el6.x86_64 (x86_64), Compiler: GCC 4.4.6 20120305, File-System: ext4, System Layer: QEMU 1.0 IOzone 3.405 Record Size: 4Kb - File Size: 512MB - Disk Test: Read Performance MB/s > Higher Is Better centos6x64 . 1072.57 |========================================================= IOzone 3.405 Record Size: 4Kb - File Size: 512MB - Disk Test: Write Performance MB/s > Higher Is Better centos6x64 . 110.07 |==========================================================